Recently a customer has some questions about GN Electric Ignition Device. They contacted GN people and GN replied. Below are the major communication between GN and operator of the ignition device.
Client’s Questions 1: I presume the solenoid valve will close once the ignition is activated or should we close it on remote. This is for preserving the gas for future use. ( we may have to ignite several times during well kill operation as we get gases intermittently-H2s Laden gas)
Reply from GN Solids Control: Once you start up the igniter and it is firing stably, the solenoid valve can be closed for saving gas. As the gas tank is small size. It is only 5kg. You can ignite again in case you need with the wireless controller.
Client’s Questions 2: As the vent line is from the top of gas buster and then connected to the igniter which will be about 6 to 8 ft high. This forms a “U” section for the vent line and liquids remaining cannot be cleared out, which gives resistance for any gas vented out and blow back into gas buster. Any solution for this. Any bypass is recommended to drain out these fluids?
Reply from GN Solids Control: What kind of gas buster you used? Mostly, the igniter is connected to mud gas separator. The vent line on top of the mud gas separator. Liquid is impossible to go inside.
Client’s Questions 3: As the igniter is kept in open position, we may also end up with sand and also rain water ( in deserts) inside the igniter. Can we intermittently flush the system with water. Is it safe for the system electrics. In case we flush, then we will definitely have a reservoir of water in the vent line and adding up sand will only plug the system.
Reply from GN Solids Control: You do not need to flush the igniter. It will not be blocked. There is a screen on top of the Igniter burner pipe to prevent big sizes blocks or stuffs fall inside.
There is a drain port with ball valve (JB/T 308 PN16DN20QB) at the bottom point of the Igniter elbow connection pipe. You should open the ball valve to drain the pipe timely to release sands/rain.
Client’s Questions 4: What would you recommend to avoid getting into critical situations at the Rig.
Reply from GN Solids Control: If you will not use the Igniter for a longer time. It is better to close all valves, and cover the Igniter burner with rainproof cloth or plastic bag, to prevent it from rain/sands.